Saw-filing machine



(No Model.) 4 sheets-'sheet 1.v

J. C. BALLEW. SAW FILING MACHINE.

INVENTOR WITNESSES (N'o Model) 4 Sheets-Sheet 2..

J. C. BALLEVVf SAWVFILING MACHINE. No. 551,708. -atensed Dec. 1,'7, 1895.

(No Model.) 4 sheets-sheen s.

J. C. BALLEW. SAW FILING MACHINE.

/ No. 551,708. Patented Dec. 17, 1895.

WITN SSES y INI/ENTOR Mw l www AN DREW BGRMMM. PHOTO-LITHUWSHINTOM IICv 4 Sheets-Sheet 4.

Y (No Model.)

' l J.' C. BLL'EW.

A SAW FILING MACHINE. No. 551,708. Y Patented Dec. 17, 189,5.

WITNESSES UNITED STATES PATENT OFFICE.

JOHN o. BALLEw,`oE EvANsvILIQE, INDIANA, AssIeNOR OF` ONE-RALF To TIIE ERONTIER IRON woRKs, or DETROIT, MICHIGAN.

sAw-FlLlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 551,708, dated December 17, 1895. Appiimion filed september 20,1894. sesamo. 523,539. (remodel.)

To all whom t may concern:

Beit known that I, JOHN O. BALLEW, a citizen of the United States, residing at Evans-- ville, county of` Vanderburg, State of Indiana, have invented a certain vnew and useful Improvement in Saw-Filing Machines; and I declare the following to be a full, clear, and exact description of the invention7 such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this speciiication.

This invention relates to saw-filing machines of the class in which` a file is carried across the saw by means of an arm provided with a rectilinear motion and the saw is fed forward under the file during each backward stroke of the file, both of the motions receiving their origin primarily from the single rotating driving-wheel, the amount of forward feed being regulated at will so that the file may be used to sharpen each tooth or each alternate tooth or teeth at'greater intervals if desired. It is my intention to 'use this iiling-machine in connection Vwith my saw-setting machine for which Letters Patent were granted to me on November 29, 1887, No. 374,032, employing the same driving-wheel, and arranging the filing and setting` machines in such relation to each other that they work in conjunction; yet, just as my setting-machine was independent, so the ling-machine is capable of entirely independent action. This machine can by power, as may be desired.

In the drawings, Figure 1 is an end viewof the machine, showing it as seen at the bottom of Fig. 2. Fig. 2 is a plan view. Fig.y 3 is a front view as seen from the right of Fig. 2. Fig. 4 is a detail showing the feed-wheel. Fig. 5 shows a Inodication of the feed-wheel. Fig. 6 is a plan view of the device employed to hold the tang in the file. Fig. 7 is a sec? tion showingthe support in which is held the arbor of the feed-wheel. Fig.,8 is a perspective showing the vise in which the saw is held under the file.

A indicates a support or table to which the machine is clamped.

1 indicates the bed of the machine. 2 indicates a clamped arm, and 3 indicates be adapted to be operated either by hand or a clamp-screw, by means of which the machine is clamped to the table A.

From the bed-plate l rise two posts, on which are mounted the rotary setting-heads 4 and 5. These setting-heads are geared together topreceive their motion primarily from the main driving-wheel 6, on the shaft of which is a bevelgear 62L meshing with the bevel-gear 6b, which is on the shaft of one of the setting-heads. The driving-wheel 6 is journaled in an arm that rises from the plate 1, and on the shaft of Athis wheel 6 is a gear 7 that meshes with two pinions 8 and 9, one of which','9,y actuates the feed-wheel, and will be described hereinafter;v the other of which, S, actuates the reciprocating mechanism that carries the iile, and will now be described.

. The shaft 10 of the wheel S has at its rear end a'miter-gear 11, that meshes with the Initer-pinion 12, and both of these pinions are supported on a strut 13, which rises from the main bed-plate'. To the shaft of the pinion 12 is secured a cam 14, and upon the face of the cam are a number of holes 142, 14h, 14C, and 14, into the upper one of which is inserted the wrist-pin of a crank-pitman 15. That one of these holes is selected which will give to the reciprocating pitman 16 the Inotion proper to the ile which is to be used, inasmuch as the distance of reciprocation of thepitman 16 varies according to the hole which is selected. As the cam 14 revolves, the pitman 15 reciprocates the sliding pitman 16, and this sliding pitman 16 forms the stem of the file-frame 17. is slotted in order that it may have its line of motion cutting the axis of the shaft of the pinion 12, and itis guided inhorizontal guides lying above and beneath it. The front end of the file-frame is guided over a frictionroller ,18,l that is itself mounted on the end of a swinging bar 19, the rear end of which bar engages with the cam 14, and the bar swings on a pin 20. The engagement between the cam 14 and the bar 19 is adjusted so that during the forward motion of theframe 17 and the file 17L the file rests'with its own weight and the weight of theforward part ofthe frameon the saw-blade 21, and during the back stroke of the frame and the Iile'the rearV end of the bar 19 is pressed downward, and

The sliding pitman 16 IOO the forward end rises and lifts the ille outof engagement with the saw. The forward end of the tile-frame is hinged to the slidin pitman 1 6 to permit the motion just described. The file-frame is provided with means for setting the tile either straight across the saw or raking with respect to the saw, so as to file either straight er raking. The attachments through which this result is accomplished are seen best in Fig. l, where 2l indicates a block into which is received the tang of the file. This block is swiveled to the file-frame and has a slight rotary motion on its vertical axis. At the front of the frame is a hanger 22, upon which is held by a set-screw 23 an adjustable piece 25, through which is a hole, and through the hole passes the holder 2JE that holds the front end of the tile. The hole and the holder passing through it are round, and the holder is adjustable on its axis, and when in adjustment is secured in place by a setscrew. The sliding piece 25 is movable either to the right or the left, and its position determines the position of the front endof the iile.

In action the file has four motions: First, it moves forward horizontally, doing work as it moves forward. rlhe front end then rises, the entire file swings forward, the rear end rising slightly and the front end rising considerably, and the frame carrying the file in its present oblique position next moves back ward. The file then drops to its horizontal position ready for another forward stroke.

The saw under work is held firmly against side vilnatiombut can move forward under the raking pressure of the ile during the forward motion of the file, and during the backward motion of the file the saw is fed forward either one or two or more teeth, as maybe provided for. The holding mechanism consists of a support on which the back of the saw-blade rests and a vise or grip which engages the saw directly below the tile. The rest consists of a grooved track or guide 27 that extends from behind the feed-wheel forward beyond the file-holding frame. Directly under the path of the file is a vise with a iixed jaw 2S and a loose jaw 2) which is actuated by a screw and lever 30. The guide 27 rests loosely between the upper ends of the jaws 2S 29, and between these jaws a portion of the guide is cut away to permit of the engagement of the extreme upper ends of the jaws with the saw blade. On the extreme upper end of each jaw is a friction-roller 3l 32, and these rollers form the gripping-surface of the jaw and are arranged to grip the saw-blade directly under the file and below the sawteeth. lVhen the file is set raking, the position of the vise is changed by setting it along t-he bed-plate to which it is held by screw.` 25) 291, that pass into the bedplate through slots in the brackets at the bottom of the vise. The saw-guide 27 is adjustable vertically, so that various widths of saws may be treated and so that the proper cut of the file on the saw may at all times be regulated. The saw-guide is the upperhorizontalpiece of a frame of which the two upright or side pieces 3S b4; pass through eyes lin lu 35 3G on the bed-piece. The frame is completed by the bottom eross bar 37, and this is secured to the two uprights Si) Sit byset-serews, and centrally through it passes an adj listing-screw held by swivel connection to the bedl. and provided atits lower end with a hand-wheel Si). -The rotation of the screw $58 changes the elevation of the guide 37. The adjustment thus provided foris used prin'larily when the sawblades are placed in position for the purpose of bringing the teeth to the proper place with respect to the path of the file, and, secondly, as a iiner means of adjustment to so regulate the elevation of the blade that the file will do its work properly. lVith each backward stroke of the file there is a feeding action produced by the rotation oli' the wheel 9. (ln the shaft of the wheel S) and directly over the groove of the saw-guide 27 is a one-toothed wheel. (Seen in detail in Fig. 4.) T he tooth proper at() is a loose piece held to the face of the head or wheel 4:1 and adjustable radially over the face of the wheel 41 which is fixed to the shaft-of the wheel f). The tooth t0 is readily adjusted so as to feed Jthe saw forward one, two, or three teeth.

The bearingfor the feed-wheel is adjustable both horizontally and vertically, and the two adjustments furnish the equivalent of a radial adjustment. rlhe purpose of the adjustment is to produce in effect a feed-wheel of variable diameter, the diameter or perimetral path of the tooth Lit() being varied, as just described; but the shaft of this one-toothed wheel is also the shaft of the wheel t), and the wheel f) must remain in mesh with the wheel 7 and the path of the outer end of the tooth 40, or the perimeter of the onetoothed wheel must be so adjusted as to engage with the saw-teeth. This requires a vertical adjustment of the shaft of wheel 4:1, and such vertical adjustment is furnished by sliding the hanger i2 under the bolt-head i on the rectangular hanger 45, one part of which rests on the frame and another part of which hangs from the iirst. \Vith this vertical adjustment there must be a corresponding horizontal ad j ustment by slidingthe hanger 4.5 on the frame under the bolt-head i3. The hole through the hanger l2 and the hole through the horizontal part of the hanger 45 are both elongated to allow of this adjustment.

A variation of the feeding device is shown in Fig. 5, where the head 4l is slotted from the center toward one side, and in the slot is adj nstabl y held a pin, upon which swings a pawl Lt2 lVith each revolution of the head 4l the pawl ft2 will push the sawblade foi ward, and the movement of the feed can be regulated within greater limits than lin the iirst form shown.

Between the feeding mechanism and the file-frame are placed the setting-heads de scribed in my previous patent.

On the cam-whecl lithere a re-entering TOO ITO

curve between the are of large diameter and the arc of small diameter, and this re-entering curve serves to catch the end of the arm 19 j ust before the iile assumes its horizontal position, and thus prevents the iile from striking against the saw with too great force.

Vhat I'claim is- 1. In a saw filing machine, the combination of a guide in which the saw moves freely, a file and means for adjusting the iile to cut raking, a vise provided with jaws spaced to permit the reception therebetween of the saw guide and friction rollers terminating the ends of the vise jaws having their axes of rotation in the path of the iile and adapted to hold the saw from vibration but to permitv easy movement along the guide, substantially as described.

2. In a saw filing machine, the combination of a reciprocating iile carrying frame, and means for holding the ile therein, means whereby the file maybe adjusted to cut rakvise adapted to hold the saw guide, rollers terminating the vise jaws having. their axes of rotation in the path of the file and adapted to engage the saw above the guide and prevent vibration, but permit the saw to move readily along the guide, substantially as described.

5. In a saw iiling machine, a one toothed wheel adapted to mesh with the saw as a rack and having its tooth adjustable radially, a driving pinion meshing with the main driving pinion, and means for shifting the shaft of the feed wheel both vertically and horizontally, whereby it is lifted while its driving pinion is continued in mesh with the main driving wheel, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

JOHN C. BALLEW. Witnesses:

F. OLoUGH, CHARLES F. BURTON. 

